package com.tzstcl.sys.user.ctrl;

import com.google.code.kaptcha.Producer;
import com.tzstcl.base.ctrl.BaseCtrl;
import com.tzstcl.base.model.AjaxResult;
import com.tzstcl.framework.aspect.NoRepeatSubmit;
import com.tzstcl.framework.constants.AppConstants;
import com.tzstcl.sys.user.model.SysPosition;
import com.tzstcl.sys.user.service.SysPositionService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import javax.annotation.Resource;
import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.awt.image.BufferedImage;
import java.io.IOException;

/**
 * 图片验证码（支持算术形式）
 * math类型算数形式 char 类型普通文本
 *
 * @author tzstcl
 */
@Controller
@RequestMapping("/captcha")
public class CaptchaCtrl extends BaseCtrl {

    @Resource(name = "captchaProducer")
    private Producer captchaProducer;

    @Resource(name = "captchaProducerMath")
    private Producer captchaProducerMath;
    @Autowired
    private SysPositionService sysPositionService;
    /**
     * 登陆页面
     *
     * @param request
     * @return
     */
    @PostMapping("/test")
    @ResponseBody
    @NoRepeatSubmit
    public AjaxResult index11(HttpServletRequest request, Model model) {
        sysPositionService.selectPage(new SysPosition());
        return success("login");
    }

    /**
     * 验证码生成 根据传入类型生成不同的验证码
     */
    @GetMapping(value = "/captchaImage")
    public ModelAndView getKaptchaImage(HttpServletRequest request, HttpServletResponse response) {
        ServletOutputStream out = null;
        try {
            response.setDateHeader("Expires", 0);
            response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
            response.addHeader("Cache-Control", "post-check=0, pre-check=0");
            response.setHeader("Pragma", "no-cache");
            response.setContentType("image/jpeg");

            String type = request.getParameter("type");
            String capStr = null;
            String code = null;
            BufferedImage bi = null;
            if ("math".equals(type)) {
                // shiro 需要的类型
                String capText = captchaProducerMath.createText();
                capStr = capText.substring(0, capText.lastIndexOf("@"));
                code = capText.substring(capText.lastIndexOf("@") + 1);
                bi = captchaProducerMath.createImage(capStr);
            } else if ("char".equals(type)) {
                // 普通验证码
                capStr = code = captchaProducer.createText();
                bi = captchaProducer.createImage(capStr);
            }
            HttpSession session = request.getSession();
            session.setAttribute(AppConstants.KAPTCHA_SESSION_KEY, code);
            out = response.getOutputStream();
            ImageIO.write(bi, "jpg", out);
            out.flush();

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (out != null) {
                    out.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return null;
    }
}